Ford Raptor Spark Plug SP546 PZK14F 6898, Ceramic Insulation Long-Life Ignition

Ford F-150 Raptor spark plug SP546 PZK14F 6898; ceramic insulator uses high-density sintered process; electrode bridge design withstands high-temperature erosion better than factory nickel alloys; under turbocharged conditions life extended by about 30%. Fits Ford F-150 Raptor models post-2000; thread M14x1.25; seat length 26.5 mm; resistance 6 kΩ. Improves ignition energy concentration and reduces misfire, especially in high-load off-road scenarios. Installation medium; torque to manufacturer standard; avoid ceramic damage.